Device fob



e. L. LEWIS.

DEVICE FOR BREAKING, CONTRACTING, AND EXPANDING RIMS. AFFLICATION FILED JAN. 20. 1919.

305,; 54 PatentedJuneS, 191a v 5v) emfi ow Masses 0 0 gwafiw.

GUY L. LEWIS, OF AKRON, OHIO.

DEVICE FOR BREAKING, CONTRACTING, AND EXPANDING RIMS.

Application filed January 20, 1919.

To all whom it may concern:

Be it known that I, Gtr L. Lewis, a citizen of the Inited States, and a resident of Akron, in the county of Summit and State of-Ohio. have invented certain new and useful Improvements in the Devices for Breaking, Contracting, and Expanding Rims; and

from and holding the same in open posit on while the tire is removed and replaced, and thereafter expanding the rim to its original position. A fnrther'object of this invention is to provide a tool of this character which will he of simple and durable construction, inexpensive to manufacture and verv efiicientin operation. lVith these and other objects in view, the invention consists of certain. novel features of construction and combination of parts, more fully hereinafter point-ed out and referred to in the specification and claim.

Referring to the accompanying drawings forming a part of this specification in which like numerals designate the same parts in all the views:

Figure 1 is a side elevational view of the improved tool showing it applied to a demountable rim for the purpose of breaking l j to the position shown in Fig. 2. il'nen in the joint and contracting same.

Fig. 2 is a view similar to that shown in Fig. l, but showingthe rim after the joint has been broken and after the rim has been contracted and showing the position assumed by the different parts of the tool when the operation is completed.

Fig. 3 is a view of one set of clamps or gripping members.

Fig. i is a view of the small connecting arm showing the forked construction.

The numeral 1 indicates a portion of the ordinary type of demountable rim showing the same with the joint thereof at i, the two ends being locked together by the usual means as shown at 3. Connected to the two ends of the rim 1, and adjacent to the joint Specification of Letters Patent.

Patented June It. 35? Serial No. 272,169.

Each set of clamps or gripping members consist of two parts or sections 43 and T. the inner surface of which conforms to the corn tour of the rim and the ends of which extend around the sides and under the rim as shown at S. The upper ends of said elampsections are squared and have a hole drilled through as at 9, one end of whch thr aded as at 10, into which hole a thumb screw ll. is inserted by means of which the clamping 113t31l3- her is adjusted to the rim.

To one side of ,the center of the clamp another hole is drilled as at 12. and into this one end of the connecting arm 13 is loosely swiveled and into the other clanip one end.

of the connecting arm lei.

The connecting arm 13 consists of straight bar swiveled to the clamp at one end, the other end of which is of forked construction as shown by 13 and 13", the two sides of ixnich are pivoted to the handle at a point where there is a set off in the handle as shown atto, the sides of the fork 13* and 13 being of suiiicient length to allow the set off in the handle from 15 to 16 to pass between the same. The other connecting arm is a straight bar swiveled tn the clamp at one end and pivoted to the end of the handle 20 as shown at 17 and containing a set off as shown from. 18 to 19 of the same size as the set off in the handle from 15 to 1?.

\Vhen the above described tool is in operation the device is applied to the rim as shown in 1 of the drawings. and when it is desired to part the rim at the joint of the same, theoperating handle is irzrwn tighter as pressure is applied thus eliminating all possibility of the clamps sl pping on the run. It w1ll be further noted that the clamps being loosely swiveled to the connect ing arms can be readily adj the rim in a position slightly on an angle so that when the rim is again cxpamicd. it will V -pand one-fourth of an inch fartner than its readily locked into the position required for running. r

This is Obviously an improvement over other devices of this character. It is obvious that various changes in form, proportion and in the minor details of construction may be made Without departing from the spirit of this invention, and I do not Wish to, be limited to the above exposure except as may be required by the claim.

What I claim as new and desire to secure Letters Patent upon is:

In a rim breaker, the combination of clamps for gripping each end of the rim, one jaw of each clamp having a perforation to one side of the normal center of the clamp when in operation, an arm loosely swiveled at one end in the perforation of one of said clamps permitting the clamp to tilt transversely to the rim and having at its opposite end a rectangular oifset With its end bent back in line with said arm, a second arm swiveled at one end in the perforation of -,the other elamp and having at its opposite end a yoke, a lever having a rectangular offset the end of which is pivoted to the bent back end of the first arm, the yoke of the. second arm being pivoted at the offset angle of the lever.

GUY L. LEWIS. Vitnesses:

FRANK A. RUTTMAN, ESTHER L. SUBRIN. 

